Read Sharp ER-A490 (serv.man2) Service Manual online
[10] Display test 2
1
Key operation
116
→
TL
2
Content
The display CG’s built in CKDC4 are checked. The 256 CG’s are
divided into 32 blocks, and each 8 characters are displayed on the
dot display.
When initializing, the operation is started from CG code 00H ~
07H. When any key is pressed, each block is displayed sequen-
tially.
The display CG’s built in CKDC4 are checked. The 256 CG’s are
divided into 32 blocks, and each 8 characters are displayed on the
dot display.
When initializing, the operation is started from CG code 00H ~
07H. When any key is pressed, each block is displayed sequen-
tially.
"xy" shows the top code of each block in hexa-decimal. (Example:
A0, B8)
A0, B8)
3
Check content
1. Check that the display is correct.
2. Check for no blur, break, and unevenness.
1. Check that the display is correct.
2. Check for no blur, break, and unevenness.
4
Cancel
Set the mode key to other position than SRV mode, and the ma-
chine will stop after printing the end print.
Set the mode key to other position than SRV mode, and the ma-
chine will stop after printing the end print.
116
End print
[11] I/R interface test
For I/R communication test, A495PN/PF is used as the checker.
1
Key operation
Perform key operation of 117
Perform key operation of 117
→
TL to set the checker side to
the reception wait state.
On the machine to be tested, perform the following key operation.
118
On the machine to be tested, perform the following key operation.
118
→
TL
2
Details of test
1) Machine to be tested
The following data are transmitted in the ASK format.
Transmission data (9600BPS)
00,11,22,33,44,55,66,77,88,
99,AA,BB,CC,DD,EE,FF
99,AA,BB,CC,DD,EE,FF
1’) Checker
After receiving the data, they are transmitted in the ASK format.
2) Machine to be tested
If received data are the same as the transmitted data, it is
normal.
normal.
Normal reception print
ASK
OK
Abnormal reception print
ASK NG
After completion of printing, the following data are sent in the
IRDA format.
IRDA format.
Transmission data (9600BPS)
00,11,22,33,44,55,66,77,88,
99,AA,BB,CC,DD,EE,FF
99,AA,BB,CC,DD,EE,FF
2’) Checker
After receiving the data, they are sent in the IRDA format.
3) Machine to be tested
If received data are the same as the transmitted data, it is
normal.
normal.
Normal reception print
IRDA OK
Abnormal reception print
IRDA NG
3
Check item
Check the print contents (both ASK OK and IRDA OK).
Check the print contents (both ASK OK and IRDA OK).
4
Test end
The end print is made and the test is automatically terminated.
The end print is made and the test is automatically terminated.
1
1 6
7-SEGMENT DISPLAY:
X
Y
S
DOT DISPLAY:
R V
Machine to be tested
ASK communication
ASK reception wait
ASK reception
IRDA transmission
IRDA reception wait
IRDA reception
ASK data
IRDA data
ASK reception wait
IRDA reception wait
IRDA reception
IRDA transmission
ASK reception
ASK transmission
ASK transmission
Checker
ASK data
IRDA data
1
1 8
X X X
7-SEGMENT DISPLAY:
I
/ R
S E N D
S
DOT DISPLAY:
R V
1
1 7
X X X
7-SEGMENT DISPLAY:
I
/ R
R C E V
S
DOT DISPLAY:
R V
1
1 7
X X X
7-SEGMENT DISPLAY:
I
/ R
S E N D
S
DOT DISPLAY:
R V
1
1 8
X X X
7-SEGMENT DISPLAY:
I
/ R
R C E V
S
DOT DISPLAY:
R V
1
1 8
X X X
7-SEGMENT DISPLAY:
I
/ R
S E N D
S
DOT DISPLAY:
R V
1
1 7
X X X
7-SEGMENT DISPLAY:
I
/ R
R C E V
S
DOT DISPLAY:
R V
1
1 7
X X X
7-SEGMENT DISPLAY:
I
/ R
S E N D
S
DOT DISPLAY:
R V
1
1 8
X X X
7-SEGMENT DISPLAY:
I
/ R
R C E V
S
DOT DISPLAY:
R V
– 36 –
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